MESON Chess Problem Database
Problem Display
PID: 89788 (8/b6b/r1R1R2q/pQpkp2r/2p1p3/N1B5/Kn1N2B1/8 w - - 0 1)
Ehrmann, Willi
Die Schwalbe, 1949
#2
8 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxd2
- 2.Red6#
- 1...Qe3
- 2.Red6#
- 1...Qf4
- 2.Red6#
- 1...Qg5
- 2.Red6#
- 1...Qg7
- 2.Red6#
- 1...Rh1
- 2.Rxe5#
- 1...Rh2
- 2.Rxe5#
- 1...Rh3
- 2.Rxe5#
- 1...Rh4
- 2.Rxe5#
- 1...Rf5
- 2.Bxe4#
- 1...Rb6
- 2.Qxc5#
- 1...Rxc6
- 2.Qxc6#
- 1...Bb6
- 2.Rcd6#
- 1...Bb8
- 2.Qxc5#
- 1...Bf5
- 2.Rxe5#
- 1...Bg6
- 2.Red6#
- 1...Bg8
- 2.Bxe4#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Qxd2
- Tries
- 1.Sxe4?
- threat
- 2.Sf6#
- 1...Rxc6
- 2.Qxc6#
- 1...Qf6
- 2.Sxf6#
- 1...Bxe4!
- threat
- 1.Bxb2?
- threat
- 2.Qxc4#
- 1...c3
- 2.Qd3#
- 2.Qc4#
- 1...Qxe6!
- threat
- 1.Rxa6?
- threat
- 2.Rad6#
- 2.Qc6#
- 2.Qd7#
- 2.Qb7#
- 1...Bb6
- 2.Qc6#
- 2.Qd7#
- 1...Qf8
- 2.Qc6#
- 2.Qb7#
- 1...Qg7
- 2.Rad6#
- 2.Red6#
- 2.Qc6#
- 1...Bb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxe6!
- threat
- 1.Qb7?
- threat
- 2.Rxa6#
- 2.Rb6#
- 2.Rcd6#
- 2.Qd7#
- 1...Rxc6
- 2.Qxc6#
- 1...Qf8
- 2.Rxa6#
- 2.Rb6#
- 2.Rcd6#
- 1...Qg7
- 2.Rcd6#
- 2.Red6#
- 1...Rb6
- 2.Rxb6#
- 2.Rcd6#
- 2.Qd7#
- 1...Bb6
- 2.Rxb6#
- 2.Rcd6#
- 2.Qd7#
- 1...Bb8
- 2.Rxa6#
- 2.Rb6#
- 2.Rcd6#
- 1...Qxe6!
- threat
- 1.Sxe4?
- Keys
- 1.Sc2!
- 1...Qxd2
- 2.Red6#
- 1...Qxe6
- 2.Se3#
- 1...Rxc6
- 2.Qxc6#
- 1...Qf8
- 2.Se3#
- 1...Qe3
- 2.Sxe3#
- 2.Red6#
- 1...Qf4
- 2.Red6#
- 1...Qg5
- 2.Red6#
- 1...Qg7
- 2.Se3#
- 2.Red6#
- 1...Qf6
- 2.Se3#
- 1...Qg6
- 2.Se3#
- 1...Rh1
- 2.Rxe5#
- 1...Rh2
- 2.Rxe5#
- 1...Rh3
- 2.Rxe5#
- 1...Rh4
- 2.Rxe5#
- 1...Rf5
- 2.Bxe4#
- 1...Rg5
- 2.Se3#
- 1...Rb6
- 2.Qxc5#
- 1...Bb6
- 2.Rcd6#
- 1...Bb8
- 2.Qxc5#
- 1...Bf5
- 2.Rxe5#
- 1...Bg6
- 2.Red6#
- 1...Bg8
- 2.Bxe4#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...a4
- 2.Sb4#
- 1...Qxd2
- 1.Sc2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- Q(j);N_GUARD,XS(B)::R1(H)
- Q(j);N_GUARD::R1(H)
- R(h);N_GUARD::R1(H),XP(g)
- R(h);S_CUTB(l)::B(C),XP(c)
- R(i);S_CUTB(k)::QAR1(F),XP(e)
- R(i);OGATE,XR(G)::QAB1(F),XR(i)
- B(k);S_CUTR(i)::R1(G)
- B(k);N_GUARD::QAR1(F),XP(e)
- B(l);S_CUTR(h)::R1(H),XP(g)
- B(l);S_CUTQ(j)::R1(H)
- B(l);N_GUARD::B(C),XP(c)
- S(a);N_GUARD::QAB1(F),XP(b)
- Tries
- Try
- S(B);P_PINP(e),XP(c)
- Threat
- B(C)+S(B),DCHECK
- Vars
- R(i);OGATE,XR(G)::QAB1(F),XR(i)
- Q(j);::B(C)+S(B),DCHECK,XQ(j)
- Refutation
- B(l);P_SPINB(l),XS(B)
- Try
- B(E);XS(a)
- Threat
- QAB1(F),XP(b)
- Refutation
- Q(j);XR(H)
- Try
- R(G);XR(i)
- Threat
- DUALS(4)
- Refutation
- Q(j);XR(H)
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- R(i);OGATE,P_SPINR(i),XR(G)::QAB1(F),XR(i)
- Refutation
- Q(j);XR(H)
- Try
- Actual
- S(D);
- Vars
- Q(j);N_GUARD,XS(B)::R1(H)
- Q(j);N_GUARD,XR(H)::S(D)
- R(i);OGATE,XR(G)::QAB1(F),XR(i)
- Q(j);N_GUARD::S(D)
- Q(j);N_GUARD::R1(H)
- R(h);N_GUARD::R1(H),XP(g)
- R(h);S_CUTB(l)::B(C),XP(c)
- R(h);S_CUTQ(j)::S(D)
- R(i);S_CUTB(k)::QAR1(F),XP(e)
- B(k);S_CUTR(i)::R1(G)
- B(k);N_GUARD::QAR1(F),XP(e)
- B(l);S_CUTR(h)::R1(H),XP(g)
- B(l);S_CUTQ(j)::R1(H)
- B(l);N_GUARD::B(C),XP(c)
- S(a);N_GUARD::QAB1(F),XP(b)
- P(d);N_GUARD::S(D)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).